RU2011122778A - COMPOSITION OF THERMAL CURING POWDER COATING - Google Patents

COMPOSITION OF THERMAL CURING POWDER COATING Download PDF

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RU2011122778A
RU2011122778A RU2011122778/05A RU2011122778A RU2011122778A RU 2011122778 A RU2011122778 A RU 2011122778A RU 2011122778/05 A RU2011122778/05 A RU 2011122778/05A RU 2011122778 A RU2011122778 A RU 2011122778A RU 2011122778 A RU2011122778 A RU 2011122778A
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resin
composition according
powder coating
thermal initiation
initiation system
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RU2522644C2 (en
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Йохан Франц Градус Антониус Янсен
Линдерт Ян Молхоэк
Ян Питер ДРЕЙФХАУТ
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ДСМ АйПи АССЕТС Б.В.
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    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
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    • C08J7/0427—Coating with only one layer of a composition containing a polymer binder
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    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/03—Powdery paints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
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    • B27K3/15—Impregnating involving polymerisation including use of polymer-containing impregnating agents
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    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
    • C08F283/01—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to unsaturated polyesters
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    • C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
    • C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
    • C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
    • C08G63/123—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds the acids or hydroxy compounds containing carbocyclic rings
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    • C08G63/18—Dicarboxylic acids and dihydroxy compounds the acids or hydroxy compounds containing carbocyclic rings
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    • C09D151/00—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers
    • C09D151/08—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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    • C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
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    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
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Abstract

1. Термоотверждаемая композиция порошкового покрытия, пригодная для отверждения при температуре 60-130°С, содержащая:- термическую систему инициирования и систему смолы,- в которой реакционная способность термической системы инициирования такова, что термическая система инициирования обеспечивает время гелирования 2,5-1000 минут при 60°С в бутандиол-диметакрилате при определении согласно DIN 16945 с использованием 1 мас.% термической системы инициирования в 99 мас.% бутандиол-диметакрилата,- в которой количество термической системы инициирования выбрано так, чтобы при нанесении композиции порошкового покрытия на подложку и отверждении при температуре 130°С в течение 20 минут, получающееся покрытие выдерживало, по меньшей мере, 50 двойных шагов при истирании в ацетоне,- в которой система смолы включает смолу и совместный сшивающий агент,- в которой смола содержит реакционноспособную ненасыщенность и в которой указанная реакционноспособная ненасыщенность является двойными связями углерод углерод, соединенными непосредственно с электроноакцепторной группой,- в которой совместный сшивающий агент выбран из группы, состоящей из акрилатов, метакрилатов, сложных виниловых эфиров, простых виниловых эфиров, виниламидов, простых алкиновых эфиров, сложных алкиновых эфиров, алкинамидов, алкинаминов, простых пропаргиловых эфиров, сложных пропаргиловых эфиров, итаконатов, енаминов и их смесей,- в которой масса на ненасыщенность в системе смолы составляет 100-1000 г/моль по определению с использованиемН ЯМР и- в которой композиция порошкового покрытия является однокомпонентной системой.2. Композиция по п.1, в которой время гелирова�1. A thermoset powder coating composition suitable for curing at a temperature of 60-130 ° C., comprising: a thermal initiation system and a resin system, in which the reactivity of the thermal initiation system is such that the thermal initiation system provides a gel time of 2.5-1000 minutes at 60 ° C in butanediol dimethacrylate as determined according to DIN 16945 using 1 wt.% thermal initiation system in 99 wt.% butanediol dimethacrylate, in which the amount of thermal initiation system It was chosen so that when the powder coating composition was applied to the substrate and cured at 130 ° C for 20 minutes, the resulting coating withstood at least 50 double steps when abraded in acetone, in which the resin system includes a resin and a joint crosslinking agent , - in which the resin contains a reactive unsaturation and in which said reactive unsaturation is carbon-carbon double bonds connected directly to an electron-withdrawing group, - in which a joint The scavenger is selected from the group consisting of acrylates, methacrylates, vinyl esters, vinyl ethers, vinylamides, alkynyl ethers, alkynyl ethers, alkynamides, alkynamines, propargyl ethers, propargyl ethers, itaconates, enamines and mixtures thereof, in which the unsaturation mass in the resin system is 100-1000 g / mol by definition using H NMR and - in which the powder coating composition is a one-component system. The composition of claim 1, wherein the gel time is

Claims (15)

1. Термоотверждаемая композиция порошкового покрытия, пригодная для отверждения при температуре 60-130°С, содержащая:1. Thermosetting powder coating composition suitable for curing at a temperature of 60-130 ° C, containing: - термическую систему инициирования и систему смолы,- thermal initiation system and resin system, - в которой реакционная способность термической системы инициирования такова, что термическая система инициирования обеспечивает время гелирования 2,5-1000 минут при 60°С в бутандиол-диметакрилате при определении согласно DIN 16945 с использованием 1 мас.% термической системы инициирования в 99 мас.% бутандиол-диметакрилата,- in which the reactivity of the thermal initiation system is such that the thermal initiation system provides a gel time of 2.5-1000 minutes at 60 ° C in butanediol dimethacrylate as determined according to DIN 16945 using 1 wt.% of the thermal initiation system in 99 wt.% butanediol dimethacrylate, - в которой количество термической системы инициирования выбрано так, чтобы при нанесении композиции порошкового покрытия на подложку и отверждении при температуре 130°С в течение 20 минут, получающееся покрытие выдерживало, по меньшей мере, 50 двойных шагов при истирании в ацетоне,- in which the amount of the thermal initiation system is selected so that when the powder coating composition is applied to the substrate and cured at 130 ° C for 20 minutes, the resulting coating withstands at least 50 double steps when abraded in acetone, - в которой система смолы включает смолу и совместный сшивающий агент,- in which the resin system includes a resin and a joint crosslinking agent, - в которой смола содержит реакционноспособную ненасыщенность и в которой указанная реакционноспособная ненасыщенность является двойными связями углерод углерод, соединенными непосредственно с электроноакцепторной группой,- in which the resin contains a reactive unsaturation and in which the specified reactive unsaturation is a carbon-carbon double bond, connected directly to the electron-withdrawing group, - в которой совместный сшивающий агент выбран из группы, состоящей из акрилатов, метакрилатов, сложных виниловых эфиров, простых виниловых эфиров, виниламидов, простых алкиновых эфиров, сложных алкиновых эфиров, алкинамидов, алкинаминов, простых пропаргиловых эфиров, сложных пропаргиловых эфиров, итаконатов, енаминов и их смесей,in which the joint crosslinking agent is selected from the group consisting of acrylates, methacrylates, vinyl esters, vinyl ethers, vinylamides, alkynyl ethers, alkynyl ethers, alkynamides, alkynamines, propargyl ethers, propargyl ethers, itaconates, enamines and mixtures thereof - в которой масса на ненасыщенность в системе смолы составляет 100-1000 г/моль по определению с использованием 1Н ЯМР и- in which the mass on the unsaturation in the resin system is 100-1000 g / mol by definition using 1 N NMR and - в которой композиция порошкового покрытия является однокомпонентной системой.- in which the composition of the powder coating is a one-component system. 2. Композиция по п.1, в которой время гелирования, обеспечиваемое термической системой инициирования, составляет, по меньшей мере, 6 минут.2. The composition according to claim 1, in which the gelation time provided by the thermal initiation system is at least 6 minutes. 3. Композиция по одному из пп.1 и 2, в которой термическая система инициирования содержит пероксид.3. The composition according to one of claims 1 and 2, in which the thermal initiation system contains peroxide. 4. Композиция по одному из пп.1 и 2, в которой термическая система инициирования содержит гидрохиноны или катехины.4. The composition according to one of claims 1 and 2, in which the thermal initiation system contains hydroquinones or catechins. 5. Композиция по одному из пп.1 и 2, в которой смола является сложным полиэфиром.5. The composition according to one of claims 1 and 2, in which the resin is a polyester. 6. Композиция по одному из пп.1 и 2, в которой совместный сшивающий агент выбран из группы, состоящей из простых виниловых эфиров, сложных виниловых эфиров, метакрилатов, акрилатов, итаконатов и их смесей.6. The composition according to one of claims 1 and 2, in which the joint crosslinking agent is selected from the group consisting of simple vinyl esters, vinyl esters, methacrylates, acrylates, itaconates and mixtures thereof. 7. Композиция по одному из пп.1 и 2, в которой масса на ненасыщенность совместного сшивающего агента составляет менее 630 г/моль, и/или в которой масса на ненасыщенность смолы составляет менее 1150 г/моль.7. The composition according to one of claims 1 and 2, in which the mass on the unsaturation of the joint crosslinking agent is less than 630 g / mol, and / or in which the mass on the unsaturation of the resin is less than 1150 g / mol. 8. Композиция по одному из пп.1 и 2, в которой смола и совместный сшивающий агент являются одним и тем же.8. The composition according to one of claims 1 and 2, in which the resin and the joint crosslinking agent are one and the same. 9. Композиция по одному из пп.1 и 2, в которой смола является сложным полиэфиром на основе фумаровой кислоты, в которой совместный сшивающий агент является простым виниловым эфиром, и в которой термическая система инициирования включает пердикарбонат, предпочтительно ди(4-t-бутилциклогексил)пероксидикарбонат или димиристилпероксидикарбонат и гидрохинон, предпочтительно трет-бутилгидрохинон или 2,3,5-триметилгидрохинон.9. The composition according to one of claims 1 and 2, in which the resin is a fumaric acid-based polyester, in which the joint crosslinking agent is a vinyl ether, and in which the thermal initiation system comprises perdicarbonate, preferably di (4-t-butylcyclohexyl ) peroxydicarbonate or dimyristylperoxydicarbonate and hydroquinone, preferably tert-butylhydroquinone or 2,3,5-trimethylhydroquinone. 10. Композиция по одному из пп.1 и 2, в которой смола является сложным полиэфиром на основе фумаровой кислоты, в которой совместный сшивающий агент является простым виниловым эфиром, и в которой термический инициатор представляет собой бензоилпероксид.10. The composition according to one of claims 1 and 2, in which the resin is a fumaric acid-based polyester, in which the joint crosslinking agent is a vinyl ether, and in which the thermal initiator is benzoyl peroxide. 11. Способ получения композиции порошкового покрытия по одному из пп.1-10, включающий стадии:11. A method of obtaining a powder coating composition according to one of claims 1 to 10, comprising the steps of: а. смешивания компонентов композиции порошкового покрытия для получения премикса,but. mixing the components of the powder coating composition to obtain a premix, b. нагревания премикса для получения экструдата,b. heating the premix to obtain an extrudate, с. охлаждения экструдата для получения твердого экструдата иfrom. cooling the extrudate to obtain a solid extrudate and d. дробления твердого экструдата до более мелких частиц для получения композиции порошкового покрытия.d. crushing the solid extrudate into smaller particles to obtain a powder coating composition. 12. Способ покрытия подложки, включающий следующие стадии:12. A method of coating a substrate, comprising the following steps: 1) нанесение композиции порошкового покрытия по одному из пп.1-10 на подложку для получения подложки с покрытием1) applying a powder coating composition according to one of claims 1 to 10 on a substrate to obtain a coated substrate 2) нагревание подложки с покрытием.2) heating the coated substrate. 13. Подложка, частично или полностью покрытая композицией порошкового покрытия по одному из пп.1-10.13. The substrate, partially or fully coated with a powder coating composition according to one of claims 1 to 10. 14. Применение композиции порошкового покрытия по одному из пп.1-10 для покрытия термочувствительной подложки.14. The use of a powder coating composition according to one of claims 1 to 10 for coating a heat-sensitive substrate. 15. Применение по п.14, в котором термочувствительной подложкой является древесина. 15. The use of claim 14, wherein the heat-sensitive substrate is wood.
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